Affiliation:
1. Sir Mortimer B. Davis-Jewish General Hospital, McGill University, Montreal, Canada
Abstract
ABSTRACT
To determine the optimal media for optochin susceptibility testing of
Streptococcus pneumoniae
, we measured inhibition zones for 72
S. pneumoniae
and 22
Streptococcus viridans
isolates on three blood-containing media. Because 15.3, 0, and 22.2% of
S. pneumoniae
organisms were misidentified on Columbia agar, Trypticase soy agar (TSA), and Mueller-Hinton agar, respectively, each containing sheep blood, we recommend that TSA-sheep blood agar be used.
Publisher
American Society for Microbiology
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